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Aerostructural design optimization of a continuous morphing trailing edge aircraft for improved mission performance

TitleAerostructural design optimization of a continuous morphing trailing edge aircraft for improved mission performance
Publication TypeConference Papers
Year of Publication2016
AuthorsBurdette, DA, Kenway, GKW, Martins, JRRA
Conference Name17th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
Date Published06/2016
Keywordsadaptive, aerostructural, aerostructural optimization, compliant, MDO, mission analysis, morphing, morphing trailing edge
Abstract
Non-morphing, conventional aircraft wings are designed for a compromise of good performance at
a variety of flight conditions. Accordingly, such wings perform sub-optimally when considered at
a single flight condition. Morphing trailing edge devices offer an opportunity to change this wing
design paradigm by allowing wings to adapt to varying flight conditions. This adaptability weakens
the correlation between performance at various flight conditions and increases the robustness of the
wing’s performance, providing closer-to-optimal performance at each flight condition. To study the
isolated aerodynamic effects of this increased robustness, we performed a number of aerodynamic
shape optimizations of a small morphing trailing edge device at a variety of flight conditions on the
Common Research Model aircraft configuration. Comparing the performance of the aircraft with a
morphing region spanning the aft 10% of the wing and an aircraft without morphing demonstrated
a 1.02% fuel burn reduction with the addition of the morphing for a 7,730 nmi mission. We repeated
this process with the inclusion of coupled structural deformations and found a fuel burn reduction of
1.72%. This value provides a baseline for the performance improvement potential of this technology,
independent of any restrictions or safety factors limiting the use of morphing trailing edge devices for
maneuver or gust load alleviation.
Citation Key3209